Electric-lamp fitting.



PATBNTED JULY 3, 1906.

A. J. BONNELLA.

ELECTRIC LAMP FITTING.

APPLIUATION FILED AUG.7,1905.

Z Uzi/44 w.

7 D 57 S MM, WWW -5 fi llt clear. andexact description of the inventlon.such as will enable others skilled in tings. and more particularly tothat class which the object of my invention is to provide a complete theproduct. The parts in order are the socket having the electrical-wirec011- nect on. the holder adapted to fit mto the ofconstructionhereinafter described in this of the lamp. opal glass. andholder.

provided with a scrmv-base.

UXITED STATES ALBERT J OHN BON N ELLA OF LONDON, ENGLAND.

ELECTRIC-LAMP FITTING.

To -77 fc/mm 2'2 may concern:

'Be it known that I, ALBERT JOHX BOX- NELLA. a subject of the King ofEngland, residing at 58 Mortimer street, London, England. have inventedcertain new and useful Improvements in Electric-Lamp Fittings; n'd ldiohereby declare the following to be a the art to which. it appertains tomake and use the same.

.\I v invention relates to electric-lainp'fituse electricity as a meansof imitating the light of a more costly lighting medium: and

construction by which a fancy library or parlor candle may be moreclosely imitated than has hitherto been accomplished. The means by whichI attain this consist. broadly. in four separate parts which whenassembled Socket and having means for continuing the current, the lampfitting intosaid holder completing the circuit. and the opal-glasscasing.

My inyention also includes certain details specification.and shown inthe accompanying drawings. in which Figure 1 is an elevation. partly insection, Fig. 2 is an elevation of the holder. showing the same Fig. 3is a similar view showing the holder and socket in a coupled position.Fig. 4 is a view of a modified form of my device. showing. means for thevertical adjustment of the holder and modified. means of circuitcompletion: and Fig. 5 is avertical section through the socket portion.Q

Referring to the drawings; a indicates an incandescei-it electric-lampglobe adapted to be inserted within an opal-glass tube 1) and having anenlarged annular portion a, adapted to rest upon said tube 1). The lamp(1 has within it'thc iilament or glower j. one end of l which isattached to the cap 2'. and the other end of which is attached to thesplit tongue is.

c is a hollow metal tube placed vertically within the glass tube 1) andhaving threads cut upon its outer face adjacent the top, 1 upon whichthe collar 1) carrying upwardlyl Specification of Letters Patent.

' mime filed August 7. 1905. Serial No. 273,101.

which the collar 1) is attached.

Patented July 3, 1906.

extending spring-fingers 72, is adapted to screw. The metal tube e isplaced within the tube c and insulated from the same by the glass tube(1. The tubes 0 and e are connected. respectively. to contact-plates cand e by wires d through the insulating-plugfi z is a loose ringdesigned to hold glass tube 1), and f is a metal cap fitting around theplugf, having pins 9 integral thereto.

In my improved socket port-ion, 2 represents a metal cylinder having aflange 3 and an inner wall 4, provided with bayonet-slots 5. A screw-cap7 is designed to hold an insulating-plug 8 within the lower portion ofthe tube 2, the said cap having an opening 10. through which a suitableelectric current can be supplied to the spring plunger-pins 9, held inthe insulating-plug 8.

In operation the ring 2 is slipped over the tube 0 and down upon theplug f and the collar 12 is screwed upon the tube c to ob tain thedesired height of the globe a. The holder is then slipped into thesocket and locked or, as shown in Fig. 2, a modification, the part f maybe threaded at 72- to screw into the socket. In either construction thecontact-plates c and ewill rest upon the plunger-pins and the currentwill flow up tube 0 to the springfingers h and up tube 6, and thecircuit will be completed when the globe is thrust into thespring-fingers and the slotted tongue enters the bore of tube e.

In Fig. 4 I have shown a modified form in which the tube 0,corresponding to the tube 0 of Fig. 1. is insulated from the collar I),holding spring-arms 72, and is adapted to telescope into the tube 1. Thesaid tube 0 has a small set-screw n, which engages in the slot at of thetube r, whereby a ready adjustment in the height of the holder may behad. The common electric wires 1.) and (1 pass through the lower portionof the tube, the wire p connecting with the inner tube 6 and the wire qconnecting with the collar 1), and the circuit is completed. as beforedescribed. The tube 0 is provided with an insulating-collar at y, to

tis a rubber collar capable of being expanded under pressure by thewashers v and 20 upon tube 1' to effect a tight connection when mydevice is placed within a candlestick-holder, and u a tube, andelectrical connections within said tube whereby when the globe isinserted it will complete a circuit, substantially as described. ,i

2. In a device of the character described, the combination with anopal-glass tube, of an electrically-wired globe, adapted to be partiallyinserted in and to rest upon said tube, metal tubes within said glasstube and means whereby when said globe is inserted within said glasstube and into contact with said metal tubes it will complete a circuit,substantially as described.

3. In a device of the character described, the combination with anopal-glass tube, of an electrically-wired globe, adapted to be partiallyinserted in and to rest upon said tube, a collar adjacent the lower endof said lobe, a split tongue extending downwardly om said collar, metaltubes'within said glass tube, an insulating-plug attached to the lowerportion of said tubes and a loose ring around said metal tubes andresting upon said plug to hold said glass tube in position, substan-'tially as described.

4. In a device of the character described, thecombination with anopal-glass tube, of metal tubes within said lass tube, an insulatin-plug attached to t elowerend of said ineta tubes, a loose ring restingupon said plug and around said metal tubes and adapted to hold saidglass tube in position, a metal I cap embracing said plug. a socketportion, and means for locking said plug within said socket portion,substantially as described.

5. In a device of the character described, the combination with aninsulating-plu of a socket portion comprising a short meta tube slotteda short distance to form outer and inner walls, said inner wall beingcut away to form bayonet-slots and said plug having a metal cap providedwith projecting pins adapted to register in said bayonet-slots andsecurely lock the parts together, substantially as described.

6. In a device of the kind described, an insulated plug, a socketportion adapted to hold said plug, comprising a flanged metal tubeslotted annularly a portion of its length to form outer and inner walls,said inner wall being cut away to form bayonet-slots, a metal ring adated to be inserted in the lower ortion 0? said socket, screw-threadsupon t e periphery of said socket and adjacent the lower end thereof, ascrew-cap engaging said threads and operating to hold saidring withinsaid tube, plunger-pins artral hole through which suitable electricwires may be connected to said plunger-pins, substantially as described.

7. In a device of the kind described, the

combination with an opal-glass tube, an insulated lug, metal tubesrising from said plug, one oi lating-tube between said metaltubes, apair of contact-plates upon the bottom of said plug, having suitableelectric connection, one with the'outer of the metal tubes and'one withthe inner one, said outer tube having threads upon its peripheryadjacent its upper end, a collar adapted to screw on aid tube, havingupwardly-extending spring-fingers, a globe, a collar around the lowersaid lobe, a split tongue extending downwardy from said globe, filamentsin said globe connected at one end to said collar and at the other endto said tongue, whereby when the collar is thrust into engagement withsaid spring-fingers the said split tongue will enter thebore of theinner metal tube to complete a circuit, substantially as described.

8. In a device of the kind described, a socket portion havingbayonet-slots therein, an insulating-plug, a metal cap embracing saidplug having projecting pins, a pair of metal tubes one within the otherrising from said plug and insulated from one another, plunger-pinsarranged within said socket, a pair of contact-plates arranged upon thebottom of said insulating-plug, connected, one to the outer and one tothe inner of said metal tubes and so arranged that when the plunger isins'r'tedin the socket the said contact-plates will rest upon saidplunger-pins, substantially as described.

9. In a device of the kind described, a socket portion, a pair'ofplunger-pins arranged within said socket and having suitable electricalconnections, an insulating-plug, a pair of tubes, one within the other,rising from said plug, contact-plates on the bottom of'said plug eachconnected to one of said tubes and so arranged that when the plug isinserted in said socket portion, the contact- ,plates will rest uponsaid plunger-pins, a.

globe, a metal collar around the lower portion of said globe, a splittongue extending downwardly from said globe, a collar upon the upperportion'of the outer tube having upwardly-extending spring-fingerswhereby when the collar on the globe is thrust within said fingers saidsplit tongue will enter the bore of the inner tubeto complete a circuit,substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

ALBERT JOHN BONNELLA. Witnesses:

' H. S. TERR",

ARTHUR WM. HEAD.

what f ranged said ring and said cap having a cen- 6 5 Letsaid tubeswithin the other, an insuportion of

